I assume you're referring to the ZCS 6.06 patch advisory that went out last night. The issue of Zimbra sending notifications through loopfuse has come up before and bothers me too. Some Zimbra employees apologized for the confusion at the time, but it looks like this hasn't been changed. At least we now can recognize this behavior but it would be nice if they changed it particularly for security related notices. It's also strange that they don't simultaneously post this on the support portal.